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Asymmetric installation and construction method for straddle type light rail special steel box extradosed cable-stayed bridge

A low-tower cable-stayed bridge and construction method technology, which is applied to bridges, bridge construction, bridge parts, etc., can solve the problems of complicated installation procedures in the air, affecting the normal passage of waterways, and difficult precision control, etc., so as to shorten the time occupied by the waterway, The effect of reducing hoisting and alignment time and high accuracy of line control

Active Publication Date: 2020-09-04
CHINA RAILWAY SHANGHAI ENGINEERING BUREAU GROUP CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problems of the above installation method are: the box girder has many sections, the installation process in the air is complicated, the precision control is difficult, and there are many sections, resulting in frequent water transportation and affecting the normal passage of the waterway

Method used

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  • Asymmetric installation and construction method for straddle type light rail special steel box extradosed cable-stayed bridge
  • Asymmetric installation and construction method for straddle type light rail special steel box extradosed cable-stayed bridge
  • Asymmetric installation and construction method for straddle type light rail special steel box extradosed cable-stayed bridge

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Embodiment Construction

[0035] The present invention will be further described below in conjunction with specific examples, but the protection scope of the present invention is not limited to the following examples.

[0036] A straddle-type light rail dedicated steel box low-tower cable-stayed bridge asymmetrical installation and construction method, comprising the following steps:

[0037] S1. Divide the steel box girder of the whole bridge into several girder sections, including: mid-span closing section H, mid-span section C symmetrically arranged relative to mid-span closing section H n ... mid-span C 2 , mid-span section C 1 , support section A 0 , side span D 1 , side span D 2 ... side span section D n , side-span closing section, side-span section D n+2 ; Among them, the mid-span section C n and midspan C 2 The part omitted between is also the corresponding mid-span segment, side span segment D 2 ... side span section D nThe part omitted between is also the corresponding side span se...

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Abstract

The invention discloses an asymmetric installation construction method for a straddle type light rail special steel box extradosed cable-stayed bridge. The method comprises the steps of dividing a full-bridge steel box girder into a plurality of girder sections, and then conducting asymmetric installation according to the hoisting sequence of a side span section D1, a middle span section C1, a side span section D2, a middle span section C2,..., a side span section Dn, a side span section D<n+2>, a side span closure section,..., a middle span section Cn and a middle span closure section H. According to the method, steel pipe supports do not need to be arranged in the mid-span section, and channel requirements can be met to the maximum extent.

Description

technical field [0001] The invention relates to the technical field of bridge construction, in particular to an asymmetrical installation and construction method for a steel box low-tower cable-stayed bridge dedicated to a straddle-type light rail. Background technique [0002] The usual method of erecting bridges on river courses is to divide the bridge deck steel box girder into multiple unit blocks, that is, beam segments, and then splice the multiple unit blocks into a whole through pier bodies and supports on site. [0003] The existing bridge deck steel box girder is usually divided into smaller segments, each segment is about 8~10m long, and then the side span and middle span are symmetrically hoisted and installed by the bridge deck crane, and the stay cables are installed at the same time , after the installation is completed, close the long side span closing section and the middle span closing section, and adjust the stay cable force and structural alignment. The ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D21/00E01D2/04E01D19/16E01D19/02E01D19/14
CPCE01D21/00E01D2/04E01D19/16E01D19/02E01D19/14E01D11/04
Inventor 韦干何鹏葛新广宦剑鹏杜智军吴回标周国友梁能锋陈桂洋黄建
Owner CHINA RAILWAY SHANGHAI ENGINEERING BUREAU GROUP CO LTD
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